Question

The Centers for Disease Control reported the percentage of people 18 years of age and older who smoke (CDC website, December 14, 2014). Suppose that a study designed to collect new data on smokers and nonsmokers uses a preliminary estimate of the proportion who smoke of .33.

Answer 1

33% is about how many people who smoke will develop lung cancer over their lifetimes. And that comes with great variability and does not account for other smoking related illness. What would the data using a preliminary estimate of .33 be measuring exaxctly?